JP7443746B2 - Hydrogen-containing water generation system and hydrogen-containing water generation method - Google Patents

Description

The present invention relates to a hydrogen-containing water generation system and a hydrogen-containing water generation method.

BACKGROUND ART There is a known technology for producing hydrogen-containing water, which is water containing hydrogen, from raw water, such as tap water, by utilizing the electrolysis effect of water. For example, Patent Document 1 describes a hydrogen-containing water generating device that suppresses a decrease in the efficiency of using current applied to an anode and a cathode.

Japanese Patent Application Publication No. 2014-147886

Here, in electrolysis, an ionization reaction that releases electrons occurs at the anode portion. Due to this reaction, the base material of the anode portion is eluted and deteriorated. At this time, since the current density in the cathode part is concentrated in the cathode power supply member, which is a charged part, deterioration is concentrated in the anode part that is close to the cathode power supply member. When elution of the base material occurs due to deterioration, the deterioration rapidly spreads from the elution part, so it is necessary to suppress local deterioration of the anode part in order to extend the life of the entire electrode.

The present invention has been made in view of the above, and an object of the present invention is to provide a hydrogen-containing water generation system and a hydrogen-containing water generation method that can suppress local deterioration of electrodes and extend their lifespan. do.

The hydrogen-containing water generation system of the present invention includes a cylindrical anode portion having a plurality of openings on the side, and a plurality of openings on the side, spaced apart radially outward or radially inward of the anode portion. A cylindrical cathode section provided, a cylindrical tank body in which the anode section and the cathode section are provided, and a rod-shaped tank body extending along the longitudinal direction of the anode section and attached to the side of the anode section. an anode power supply member; a rod-shaped cathode power supply member that extends along the longitudinal direction of the cathode part and is attached to a side of the cathode part; and a first hole through which the lower end of the anode power supply member passes. and a second hole through which the lower end of the cathode power supply member passes, and a first lower base that closes the lower end of the tank body; , a first hole through which the lower end of the anode power supply member passes; and a lower end of the cathode power supply member located at a position different from the first lower base with respect to the position of the first hole. a second hole through which the first lower base of the hydrogen-containing water generating electrolytic cell is inserted, and a second lower base that closes the lower end of the tank body; is replaced by the second lower base.

The hydrogen-containing water generation system further includes a first hole through which a lower end of the anode power supply member passes, and a first lower base and a second lower base based on the position of the first hole. a third lower base having a second hole through which the lower end of the cathode power supply member passes through at a position different from the base, and closing the lower end of the tank body; After the first lower base of the hydrogen-containing water producing electrolytic cell is replaced with the second lower base, further at the predetermined time, the second lower base of the hydrogen-containing water producing electrolytic cell is replaced with the second lower base of the hydrogen-containing water producing electrolytic cell. Replaced with third lower base.

In the hydrogen-containing water generation system, a line segment from the second hole of the first lower base to the central axis of the cathode part, and a line segment from the second hole of the second lower base to the center axis of the cathode part. The angle formed by the line segment from the second hole of the second lower base to the center axis of the cathode section is the angle formed by the line segment from the second hole of the second lower base to the central axis of the cathode section. It is preferable that the angle formed by the line segment to the central axis of the cathode section is the same.

The method for producing hydrogen-containing water of the present invention includes a cylindrical anode part having a plurality of openings on the side, and a cylindrical anode part having a plurality of openings in the side part, spaced apart radially outward or radially inward of the anode part. A cylindrical cathode section provided, a cylindrical tank body in which the anode section and the cathode section are provided, and a rod-shaped tank body extending along the longitudinal direction of the anode section and attached to the side of the anode section. A hydrogen-containing water generation system comprising a hydrogen-containing water generation electrolytic cell comprising an anode power supply member and a rod-shaped cathode power supply member extending along the longitudinal direction of the cathode part and attached to the side of the cathode part. A method for producing hydrogen-containing water, comprising: a first hole through which a lower end of the anode power supply member passes; and a second hole through which a lower end of the cathode power supply member passes; A first lower base that closes the lower end of the anode power supply member, a first hole through which the lower end of the anode power supply member passes, and a first lower base that is different from the first lower base based on the position of the first hole. a lower base preparation step of preparing a second lower base having a second hole at a position through which the lower end of the cathode power supply member passes, and closing the lower end of the tank body; , a lower base number setting step of setting the total number of the first lower base and the second lower base prepared in the lower base preparing step; a lower base replacement interval setting step of setting a time interval until replacement with the second lower base; and a lower base exchanging step of exchanging the first lower base with the second lower base a predetermined number of times based on the total number of lower bases.

Preferably, the hydrogen-containing water generation method includes an electrode life prediction step of predicting the life of the anode part of the hydrogen-containing water generation electrolytic cell.

According to the present invention, it is possible to suppress local deterioration of the electrode and extend its life.

FIG. 1 is a perspective view showing an example of an electrode of an electrolytic cell that constitutes a hydrogen-containing water generation system according to this embodiment. FIG. 2 is a sectional view showing an example of an electrolytic cell of the hydrogen-containing water generation system according to the present embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a plan view schematically showing a configuration example of the first lower base according to the present embodiment. FIG. 5 is a plan view schematically showing a configuration example of the second lower base according to the present embodiment. FIG. 6 is a flowchart showing the flow of the hydrogen-containing water generation method according to the present embodiment. FIG. 7 is a flowchart illustrating an example of the processing of the control unit of the hydrogen-containing water generation system in the lower base replacement step of FIG. 6 .

EMBODIMENT OF THE INVENTION Below, embodiment of the hydrogen-containing water production system 100 based on this invention is described in detail based on drawing. In addition, in the following description of the embodiment, the same components are given the same symbols, and different components are given different symbols.

(Configuration of electrode)
First, the configuration of the electrode 10 for generating hydrogen-containing water included in the electrolytic cell DK that constitutes the hydrogen-containing water generation system 100 will be described. FIG. 1 is a perspective view showing an example of an electrode 10 of an electrolytic cell DK that constitutes a hydrogen-containing water generation system 100 according to the present embodiment. The electrode 10 generates hydrogen-containing water R, which is water containing hydrogen, from raw water W by utilizing the electrolysis effect of water. The raw water W is hot water or the like that is supplied from a water supply device or the like to the electrolytic cell DK via a water supply channel, a circulation pump P (see FIG. 2), or the like. The hydrogen-containing water R is neutral water.

As shown in FIG. 1, the electrode 10 has an anode section 12 and a cathode section 14. Both the anode section 12 and the cathode section 14 are cylindrical conductors. The anode section 12 is provided concentrically inside the cathode section 14 and is spaced apart from the cathode section 14 . The electrode 10, more specifically the anode part 12 and the cathode part 14, have a lower end opening 10HA and an upper end opening 10HB as openings at both ends, respectively. The distance between the anode section 12 and the cathode section 14 (referred to as an interelectrode gap) is maintained by a lower spacer 52 and an upper spacer 54 (see FIG. 2).

In this embodiment, the size of the gap between the electrodes of the anode section 12 and the cathode section 14 is preferably 0.1 mm or more and 1 mm or less. By setting the size of the inter-electrode gap within the range described above, when the electrode 10 generates hydrogen-containing water R, even if the potential difference between the voltages applied to the anode section 12 and the cathode section 14 is relatively small, The electrode 10 can generate a sufficient amount of hydrogen. If the size of the inter-electrode gap is within the range described above, even if the voltage applied to the electrode 10 is relatively low, the electrode 10 will dissolve a sufficient amount of hydrogen into the raw water W and a large amount of hydrogen will be dissolved. Hydrogen-containing water R can be produced. Moreover, if the amount of hydrogen dissolved in the hydrogen-containing water R is the same, the electrode 10 can suppress power consumption.

In this embodiment, the anode section 12 and the cathode section 14 are made of titanium (Ti) plated with platinum (Pt). The plating may be, for example, platinum-iridium (Ir) plating. In this embodiment, the titanium is pure titanium. The anode part 12 and the cathode part 14 are not limited to titanium plated with platinum, but are preferably made of a material that does not dissolve into the raw water W (for example, vanadium (V)). In this embodiment, both the anode section 12 and the cathode section 14 are plated, but it is also possible to plate only the anode section 12 and leave the cathode section 14 unplated. Thereby, the manufacturing cost of the electrode 10 can be reduced.

The anode section 12 and the cathode section 14 are net-like members in which a plurality of linear sections 16 intersect. The anode section 12 has a plurality of openings 12H on the side. The cathode section 14 has a plurality of openings 14H on the side. The portions surrounded by the plurality of linear portions 16 become the openings 12H and 14H of the anode section 12 and the cathode section 14. The plurality of openings 12H of the anode section 12 penetrate through the side of the anode section 12 in the thickness direction of the anode section 12. The plurality of openings 14H of the cathode section 14 penetrate the side portions of the cathode section 14 in the thickness direction of the cathode section 14. The detailed shapes of the linear portions 16 of the anode section 12 and the cathode section 14 will be described later.

The anode section 12 has a slit 12SL extending in the longitudinal direction E, that is, the direction in which the anode section 12, which is a cylindrical member, extends. The cathode section 14 has a slit 14SL extending in the longitudinal direction E, that is, the direction in which the cathode section 14, which is a cylindrical member, extends. The electrode 10 includes a plurality of restraining members 18 on the outside of the cathode section 14. The restraint member 18 is, for example, a resin binding band, a metal wire, or the like. The restraining member 18 is preferably made of a material that has high corrosion resistance and does not dissolve into the raw water W. The restraining member 18 closes the slit 12SL of the anode part 12 and the slit 14SL of the cathode part 14, and restrains the anode part 12 and the cathode part 14 from the circumferential direction C of the anode part 12 and the cathode part 14. By removing the restraining member 18, the electrode 10 can be easily disassembled into the anode section 12 and the cathode section 14, making maintenance, inspection, repair, and parts replacement easy.

The anode power supply member 20 and the cathode power supply member 22 are both rod-shaped conductors. The anode power supply member 20 is electrically connected to the anode section 12 . The anode power supply member 20 is electrically connected to the anode of the power source 30. The cathode power supply member 22 is electrically connected to the cathode section 14 . The cathode power supply member 22 is electrically connected to the cathode of the power source 30. Power supply 30 is a DC power supply. With such a configuration, the anode section 12 is electrically connected to the positive electrode of the power source 30 via the anode power supply member 20, and the cathode section 14 is electrically connected to the cathode of the power source 30 through the cathode power supply member 22. connected to. The power supply 30 is supplied with voltage from the control board of the electrolytic cell DK (see FIG. 2), for example, based on a control signal output from the control unit CL (see FIG. 2).

In this embodiment, the anode power supply member 20 and the cathode power supply member 22 are joined and attached to the anode part 12 and the cathode part 14, respectively, at a plurality of joints CP by spot welding (see FIG. 3). In the longitudinal direction E of the anode power supply member 20 and the cathode power supply member 22, the plurality of joint parts CP are provided so as not to be biased toward one part. By doing so, the anode power supply member 20 and the cathode power supply member 22 can supply power from the entire longitudinal direction E thereof. The anode power supply member 20 and the cathode power supply member 22 are not limited to spot welding, and any joining means may be used as long as they are electrically connected to the anode section 12 and the cathode section 14, respectively.

In this embodiment, the anode power supply member 20 and the cathode power supply member 22 are members made of titanium plated with platinum, similarly to the anode part 12 and the cathode part 14. The plating may be, for example, platinum-iridium plating. Like the anode part 12 and the cathode part 14, the anode power supply member 20 and the cathode power supply member 22 are not limited to titanium plated with platinum, but must be made of a material that does not dissolve into the raw water W. is preferred. In this embodiment, the cathode part 14 does not need to be plated, but in this case, the cathode power supply member 22 also does not need to be plated.

(Configuration of electrolytic cell)
Next, the configuration of the electrolytic cell DK will be explained. FIG. 2 is a sectional view showing an example of the electrolytic cell DK of the hydrogen-containing water generation system 100 according to the present embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. As shown in FIG. 2, the electrolytic cell DK includes a cell main body 40, a lower base 42, an upper base 44, a water supply pipe 46, a drain pipe 48, a lower spacer 52, an upper spacer 54, A joint pipe 50 is provided.

The tank body 40 is a transparent cylindrical tank. An electrode 10 is provided inside the tank body 40 . The electrode 10 is arranged with the longitudinal direction E being the vertical direction. The anode section 12, the cathode section 14, and the tank body 40 are arranged concentrically about the central axis Zt. Since the tank body 40 is transparent, the user can visually recognize the electrode 10 from the outside of the tank body 40, particularly the cathode section 14 provided at a position facing the tank body 40. The lower end of the tank body 40 is covered and fixed to a lower base 42. The upper end of the tank body 40 is covered with and fixed to an upper base 44.

The lower base 42 fixes the lower end of the tank body 40, the anode power supply member 20, and the cathode power supply member 22. A portion of the anode power supply member 20 and the cathode power supply member 22 protrudes downward from the lower end opening 10HA of the anode section 12 and the cathode section 14. The lower base 42 is penetrated by the protruding portion 20P of the anode power supply member 20 and the protrusion portion 22P of the cathode power supply member 22 in a watertight manner. The lower base 42 fixes the anode part 12 and the cathode part 14 via the anode power supply member 20 and the cathode power supply member 22. Thereby, the hydrogen-containing water generation system 100 can supply power to the electrode 10 from outside the tank body 40 via the anode power supply member 20 and the cathode power supply member 22. Moreover, the electrode 10 is fixed to the lower base 42 and the tank body 40 via the anode power supply member 20 and the cathode power supply member 22. The upper base 44 is a cylindrical base whose upper end is closed. The upper base 44 fixes the upper end of the tank body 40. A joining pipe 50 that communicates the air vent valve AV with the inner side of the inner peripheral portion 10Si of the electrode 10 passes through the upper base 44.

The water supply pipe 46 is an I-shaped pipe that supplies raw water W to the tank body 40. The water supply pipe 46 is provided so as to penetrate the side of the tank body 40 in a watertight manner. The water supply portion 46H, which is an opening on the downstream end side of the water supply pipe 46, is provided outside the outer peripheral portion 10So of the electrode 10. The water supply unit 46H supplies raw water W toward the inner circumference.

The drain pipe 48 is an I-shaped pipe that drains the hydrogen-containing water R from the tank body 40. The drain pipe 48 is provided to penetrate the side of the tank body 40 in a watertight manner. A drain portion 48H, which is an opening on the upstream end side of the drain pipe 48, is provided outside the outer peripheral portion 10So of the electrode 10. The drain pipe 48 drains the hydrogen-containing water R toward the outer circumference.

The joint pipe 50 communicates the air vent valve AV with the inner side of the inner peripheral portion 10Si of the electrode 10. The joint pipe 50 passes through the upper base 44 and is fixed. The upper end of the joint pipe 50 communicates with the air vent valve AV. The lower end of the joint tube 50 communicates with the lower end of the upper end opening 10HB on the inner side of the inner circumference 10Si of the electrode 10. The air vent valve AV releases air G when the internal pressure of the tank body 40 exceeds a predetermined value. For example, the air G contains oxygen gas generated by an electrolysis reaction of water within the tank body 40. With such a configuration, the electrolytic cell DK can preferentially discharge oxygen gas from the cell main body 40. The electrolytic cell DK suppresses the amount of oxygen dissolved in the water in the tank main body 40 by preferentially discharging oxygen gas from the tank main body 40, and generates hydrogen-containing water R.

As described above, the inter-electrode gap between the anode section 12 and the cathode section 14 is maintained by the lower spacer 52 and the upper spacer 54. The lower spacer 52 has a cylindrical shape and is disposed between the inner circumference of the cathode section 14 and the outer circumference of the anode section 12 at the lower end opening 10HA. The upper spacer 54 has a cylindrical shape and is disposed between the inner circumference of the cathode section 14 and the outer circumference of the anode section 12 at the upper end opening 10HB. The upper spacer 54 has an inner flange portion 54Fi that protrudes toward the inner circumferential direction at the upper end portion. The inner flange portion 54Fi sets a predetermined distance between the electrode 10 and the joining tube 50. The upper spacer 54 has an outer flange 54Fo at its upper end. The outer flange portion 54Fo protrudes radially and outwardly and is provided all around the circumference in the circumferential direction C. The outer flange portion 54Fo sets a predetermined distance between the electrode 10 and the inner peripheral portion 40Si of the tank body 40.

The control unit CL of the hydrogen-containing water generation system 100 outputs control signals that cause each component of the hydrogen-containing water generation system 100 to execute various functions. The control unit CL outputs, for example, a control signal for controlling the voltage to be applied to the power supply 30 of the electrolytic cell DK. The control unit CL outputs a control signal that controls the supply of raw water W from a water supply device or the like to the tank body 40 via the water supply pipe 46, for example. Control unit CL may include a timer. For example, the timer counts the operating time of the hydrogen-containing water generation system 100. The operating time is the cumulative time of applying voltage to the electrolytic cell DK after replacing the electrode 10.

The control unit CL may include, for example, an input unit capable of receiving input from an operator or the like. The control unit CL outputs various control signals based on predetermined operation signals input from the input unit. The input unit is configured to input, for example, the operating time of the hydrogen-containing water generation system 100 until the electrode 10 of the electrolytic cell DK fails, based on experimental values of a trial experiment using an electrode 10 similar to the electrode 10 of the electrolytic cell DK. It may also be possible to accept predicted values. The control unit CL may be set with a predicted value of the operating time of the hydrogen-containing water generation system 100 until the electrolytic cell DK fails from the input unit.

The control unit CL may further include a display unit that displays various notification information. The display unit is a display device including, for example, a liquid crystal display (LCD). The display section displays notification information based on the notification information acquired from the control section CL. When the control unit CL includes a timer, the notification information may include information that prompts a worker or the like to perform maintenance, for example, based on a maintenance period based on preset operating information. When the control unit CL includes a timer, the display unit may display the operating time of the hydrogen-containing water generation system 100. When the display section is a touch panel display, the display section may include an input section.

(Electrolysis of electrolytic cell)
Next, electrolysis of the raw water W in the electrolytic cell DK will be explained. In the hydrogen-containing water generation system 100, an electrode 10 is immersed in raw water W, and a voltage is applied to the electrode 10 by a power source 30 to generate a potential difference between an anode part 12 and a cathode part 14. is electrolyzed to produce hydrogen-containing water R.

In the hydrogen-containing water generation system 100, when a predetermined voltage is applied from the power supply 30 between the anode section 12 and the cathode section 14 of the electrode 10, a reaction of the following formula (1) occurs in the anode section 12.

2H2O→O2+4H++4e-...(1)

In the hydrogen-containing water generation system 100, when a predetermined voltage is applied from the power supply 30 between the anode section 12 and the cathode section 14 of the electrode 10, a reaction according to the following formula (2) occurs in the cathode section 14.

4H++4e-→2H2...(2)

In the hydrogen-containing water generation system 100, when a predetermined voltage is applied from the power supply 30 between the anode part 12 and the cathode part 14 of the electrode 10, the following formula (3 ) reaction occurs.

2H2O→O2+2H2...(3)

The hydrogen-containing water R generated in the hydrogen-containing water generation system 100, that is, flowing out from the drainage section 48H of the electrolytic cell DK, has a neutral pH of, for example, about 7 or more and 7.5 or less. Ionized hydrogen ions H+ generated at the anode section 12 gather on the cathode section 14 side, and bubbles of hydrogen gas (H2) are generated in the cathode section 14. These bubbles are minute bubbles with a diameter on the order of nanometers. Oxygen gas (O2) gathers in the form of bubbles at the inner circumference of the anode part 12 (the inner circumference 10Si of the electrode 10), and is distributed along the inner circumference of the anode part 12 or inside the inner circumference of the anode part 12. and is discharged to the outside of the hydrogen-containing water generation system 100 from the air vent valve AV through the joint pipe 50.

(Configuration of lower base)
Next, the configuration of the lower base 42 will be explained in more detail. In this embodiment, the lower base 42 includes two lower bases 42, that is, a first lower base 421 and a second lower base 422. The first lower base 421 and the second lower base 422 replaceably close the lower end of the tank body 40. FIG. 4 is a plan view schematically showing a configuration example of the first lower base 421 according to the present embodiment. FIG. 5 is a plan view schematically showing a configuration example of the second lower base 422 according to the present embodiment.

As shown in FIG. 4, the first lower base 421 has a fitting groove 42R, a first hole 421O, and a second hole 421H. The fitting groove 42R is an annular groove provided on the upper surface of the first lower base 421. The lower end of the tank main body 40 is closed by the first lower base 421 by fitting the lower end into the fitting groove 42R. The first hole 421O is a hole through which the protruding portion 20P of the anode power supply member 20 penetrates in a watertight manner. The second hole 421H is a hole through which the protruding portion 22P of the cathode power supply member 22 penetrates in a watertight manner. The first hole 421O and the second hole 421H penetrate the first lower base 421 in a direction parallel to the central axis Zt. The first lower base 421 is closed by inserting the anode power supply member 20 and the cathode power supply member 22 into the first hole 421O and the second hole 421H.

As shown in FIG. 5, the second lower base 422 has a fitting groove 42R, a first hole 422O, and a second hole 422H. The fitting groove 42R is an annular groove provided on the upper surface of the second lower base 422. The lower end of the tank body 40 is closed by the second lower base 422 by fitting the lower end into the fitting groove 42R. The first hole 422O is a hole through which the protruding portion 20P of the anode power supply member 20 penetrates in a watertight manner. The second hole 422H is a hole through which the protruding portion 22P of the cathode power supply member 22 penetrates in a watertight manner. The first hole 422O and the second hole 422H penetrate the second lower base 422 in a direction parallel to the central axis Zt. The second lower base 422 is closed by inserting the anode power supply member 20 and the cathode power supply member 22 into the first hole 422O and the second hole 422H.

The first hole 421O and the second hole 421H of the first lower base 421 are provided on opposite sides of the central axis Zt. On the other hand, the first hole 422O and the second hole 422H of the second lower base 422 are provided on the same side with respect to the central axis Zt. That is, when the tank body 40 is closed by the first lower base 421, the anode power supply member 20 and the cathode power supply member 22 are provided on opposite sides of the central axis Zt. On the other hand, when the tank body 40 is closed by the second lower base 422, the anode power supply member 20 and the cathode power supply member 22 are provided on the same side with respect to the central axis Zt. That is, when attaching the first lower base 421 to the tank body 40 and when attaching the second lower base 422, the cathode part 14 and the cathode power supply member 22 are aligned with the center axis with respect to the anode part 12. The position changes to a position rotated 180 degrees around Zt.

(Hydrogen-containing water generation method)
Next, a method for generating hydrogen-containing water R in the hydrogen-containing water generation system 100 of this embodiment will be described. FIG. 6 is a flowchart showing the flow of the hydrogen-containing water generation method according to the present embodiment. The hydrogen-containing water generation method according to the present embodiment includes an electrode life prediction step ST201, a lower base preparation step ST202, a lower base number setting step ST203, a lower base replacement interval setting step ST204, and a lower base replacement interval setting step ST204. and a base replacement step ST205.

Electrode life prediction step ST201 is a step of predicting the life of the electrode 10 of the electrolytic cell DK. In the electrode life prediction step ST201, for example, a predicted value of the operating time until failure of the electrode 10 of the electrolytic cell DK is calculated based on the experimental values of a trial experiment using an electrode 10 similar to the electrode 10 of the electrolytic cell DK. Set in the control unit CL. In the same hydrogen-containing water generation system 100, when the predicted value of the operating time until failure of the electrode 10 of the electrolytic cell DK has already been set, the electrode life prediction step ST201 may be omitted.

The lower base preparation step ST202 is a step for preparing a predetermined number of lower bases 42. In this embodiment, two lower bases 42, a first lower base 421 and a second lower base 422, are prepared. The lower base preparation step ST202 is not limited to this embodiment, and three or more lower bases 42 may be prepared. In this case, the second holes 421H and 422H of the respective lower bases 42 are formed at different positions with respect to the positions of the first holes 421O and 422O. The second holes 421H and 422H of each lower base 42 are preferably formed at equal intervals around the central axis Zt with the positions of the first holes 421O and 422O as a reference.

The lower base number setting step ST203 is a step for setting the lower base number N indicating the number of lower bases 42. In this embodiment, the number N of lower bases is N=2. The lower base preparation step ST202 and the lower base number setting step ST203 may be performed before the electrode life prediction step ST201.

The lower base replacement interval setting step ST204 is a step of setting the lower base replacement interval Tc, which is the interval at which the lower base 42 is replaced with another lower base 42. The lower base replacement interval Tc is set based on the predicted value of the operating time until failure of the electrode 10 of the electrolytic cell DK set in the electrode life prediction step ST201. The lower base replacement interval Tc is calculated, for example, by integrating a predetermined safety factor with the predicted value of the operating time until failure. Note that the lower base replacement interval Tc is constant in the process of the flowchart shown in FIG. The lower base 42 may be replaced with another lower base 42. Further, in this embodiment, since the number N of lower bases of the lower base 42 is 2, the number of times the lower base 42 is replaced is once.

The lower base replacement step ST205 is a step of replacing the lower base 42 with another lower base 42. In the lower base replacement step ST205, the lower base 42 is replaced with another lower base 42 every lower base replacement interval Tc. The lower base replacement step ST205 will be explained in more detail. FIG. 7 is a flowchart showing an example of the processing of the control unit CR of the hydrogen-containing water generation system 100 in the lower base replacement step ST205 of FIG. The control unit CL assumes that the count-up timer is in operation by setting time t=0 when the electrolytic cell DK starts operating at time 0.

In step ST211, the control unit CL stores the lower base replacement number Nc indicating the number of lower bases 42 to be replaced next time as Nc=0. The control unit CL moves to step ST212. In step ST212, the control unit CL increments the counter value of the lower base replacement number Nc by one and stores it as Nc=Nc+1. The control unit CL moves to step ST213.

In step ST213, the control unit CL determines whether time t has reached the time to replace the lower base 42, which is calculated from the integration of the lower base replacement interval Tc and the number of lower base replacements Nc. (t≧Tc×Nc?). If the control unit CL determines that the time t has not reached the time to replace the lower base 42 (step ST213; No), it repeatedly executes step ST213 at every predetermined period. When the control unit CL determines that the time t has reached the time to replace the lower base 42 (step ST213; Yes), the process proceeds to step ST214.

In step ST214, the control unit CL determines whether the number Nc of lower bases replaced is equal to or greater than the number N of lower bases. When the control unit CL determines that the number Nc of lower bases to be replaced is smaller than the number N of lower bases (step ST214; No), the process proceeds to step ST215. When the control unit CL determines that the number Nc of lower bases to be replaced is equal to or greater than the number N of lower bases (step ST214; Yes), the process proceeds to step ST217.

If it is determined that the number Nc of lower bases to be replaced is smaller than the number N of lower bases (step ST214; No), the control unit CL issues a notification to replace the lower base 42 in step ST215. More specifically, the control unit CL outputs a control signal including notification information urging replacement of the lower base 42 to the display unit. The display section displays notification information prompting the user to replace the lower base 42.

In step ST216, the control unit CL determines whether the lower base 42 has been replaced. For example, when the control unit CL obtains an operation signal indicating that the input unit has received a predetermined operation indicating that the lower base 42 has been replaced, the control unit CL determines that the lower base 42 has been replaced. When the control unit CL determines that the lower base 42 has not been replaced (step ST216; No), the control unit CL returns to step ST215 and repeatedly executes steps ST215 to ST216 at every predetermined period. When the control unit CL determines that the lower base 42 has been replaced (step ST216; Yes), the process proceeds to step ST212.

If it is determined that the lower base replacement number Nc is greater than or equal to the lower base base number N (step ST214; Yes), the control unit CL issues a notification to replace the electrode 10 in step ST217. More specifically, the control unit CL outputs a control signal including notification information urging replacement of the electrode 10 to the display unit. The display section displays notification information prompting the user to replace the electrode 10. After completing step ST217, the control unit CL ends the lower base exchanging step ST205 shown in FIG. 6 by ending the process of the flowchart shown in FIG. The control unit CL ends the process of the flowchart shown in FIG.

As described above, the electrolytic cell DK of the hydrogen-containing water generation system 100 of the present embodiment includes a first lower base 421 and a second lower base 422 that replaceably close the lower end of the tank body 40. and are provided interchangeably. The first lower base 421 has a first hole 421O through which the lower end of the anode power supply member 20 passes, and a second hole 421H through which the lower end of the cathode power supply member 22 passes. The second lower base 422 has a first hole 422O through which the lower end of the anode power supply member 20 passes, and a second hole 422H through which the lower end of the cathode power supply member 22 passes. The second hole 421H of the first lower base 421 and the second hole 422H of the second lower base 422 are formed at different positions with respect to the positions of the first holes 421O and 422O.

According to the electrolytic cell DK of the hydrogen-containing water generation system 100 of this embodiment, by replacing the lower base 42, the position of the cathode power supply member 22 relative to the position of the anode part 12 changes. For example, in the present embodiment, when attaching the first lower base 421 to the tank body 40, when attaching the second lower base 422, the cathode section 14 and the cathode power supply member 22 are connected to the anode section 12. The position changes to a position rotated by 180 degrees around the central axis Zt. In the electrolysis reaction that generates hydrogen-containing water R, the current density in the cathode part 14 is concentrated in the cathode power supply member 22, which is the charged part, so that the current density in the cathode part 14 is concentrated in the cathode power supply member 22, which is the charged part. Deterioration becomes concentrated. On the other hand, in the electrolytic cell DK, the position of the cathode power supply member 22 relative to the anode part 12 can be moved before the part of the anode part 12 that is close to the cathode power supply member 22 becomes punctured or otherwise malfunctions. be. Thereby, local deterioration of the electrode 10, particularly the anode portion 12, can be suppressed and the life span can be extended.

In this embodiment, the anode section 12, the cathode section 14, and the tank body 40 are all cylindrical in shape, but are not limited to this, and may be cylindrical and rotatable at predetermined angles. It can be of any shape. Further, the electrode 10 may not have the lower end side opening 10HA and the upper end side opening 10HB, or may have only either the lower end side opening 10HA or the upper end side opening 10HB. It's okay.

In this embodiment, the electrode 10 is fixed to the lower base 42 and the tank body 40 via the anode power supply member 20 and the cathode power supply member 22, but the fixing method is not particularly limited. Furthermore, in this embodiment, the cylindrical anode section 12, the cathode section 14, and the tank main body 40 are arranged so that their axial directions are parallel to the vertical direction, so that the flow of water in the tank main body 40 can be appropriately controlled. control, and the hydrogen-containing water R can be suitably discharged. Note that the orientations of the anode section 12, the cathode section 14, and the tank body 40 are not limited to the direction in which the axial direction is parallel to the vertical direction, but it is preferable that they be arranged along the axial direction.

In the present embodiment, the end of the anode power supply member 20 opposite to the protruding portion 20P extends to the vicinity of the upper end opening 10HB, but the length of the part of the anode power supply member 20 attached to the anode portion 12 is The length may be less than half the dimension of the anode section 12 in the longitudinal direction E. The end of the cathode power supply member 22 opposite to the protruding portion 22P extends to the vicinity of the upper end opening 10HB. It may be half or less of the dimension in the longitudinal direction E of 14. In these cases, for example, the electrode 10 may be provided with an anode support member having the same shape as the anode power supply member 20 on the side opposite to the side on which the anode power supply member 20 is provided. Further, the electrode 10 may be provided with a cathode support member having the same shape as the cathode power supply member 22 on the side opposite to the side on which the cathode power supply member 22 is provided. The anode support member and the cathode support member may be made of the same material as the anode power supply member 20 and the cathode power supply member 22, or may be made of different materials.

The anode power supply member 20 does not need to have a rod-like shape as in this embodiment, and may have any shape. Further, the anode power supply member 20 is not limited to being connected to the anode section 12 at the lower end side opening 10HA, but may be connected at any arbitrary location as long as it is electrically connected to the anode section 12 as a conductor. . The cathode power supply member 22 does not need to have a rod-like shape as in this embodiment, and may have any shape. Further, the cathode power supply member 22 is not limited to being connected to the cathode section 14 at the lower end side opening 10HA, but may be connected at any location as long as it is electrically connected to the cathode section 14 as a conductor. .

In this embodiment, the anode section 12 and the cathode section 14 are provided spaced apart via the lower spacer 52 and the upper spacer 54, but there are a plurality of A cylindrical insulator having an opening may be interposed. For example, the insulator is in contact with the outer circumferential portion of the anode portion 12 and the inner circumferential portion of the cathode portion 14 so as to be rotatable with respect to each other around the central axis Zt.

In this embodiment, the electrode 10 has the anode part 12 on the inside and the cathode part 14 on the outside, but it may have the cathode part 14 on the inside and the anode part 12 on the outside. In this case, it is preferable that the water supply part 46H of the water supply pipe 46 be provided inside the inner peripheral part of the cathode part 14 disposed inside, and supply water vertically upward. Further, the drain portion 48H of the drain pipe 48 is provided inside the inner circumferential portion of the cathode portion 14 disposed inside, and above the water supply portion 46H, the water drain portion 48H is disposed inside the cathode portion 14, and is located above the water supply portion 46H. It is preferable to take the contained water R. Furthermore, it is preferable that the joint tube 50 communicates with an internal space of the upper base 44 that communicates with the outside of the outer peripheral portion of the anode section 12 .

Although this embodiment has been described above, the present invention is not limited to this embodiment. Furthermore, the above-mentioned components include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those that are in a so-called equivalent range. Furthermore, the aforementioned components can be combined as appropriate. Furthermore, various omissions, substitutions, or changes to the constituent elements can be made without departing from the gist of the present embodiment.

10 electrode 12 anode part 14 cathode part 20 power supply member for anode 22 power supply member for cathode 30 power supply 40 tank body 42 lower base 421 first lower base 422 second lower base 421O, 422O first hole 421H, 422H Second hole 100 Hydrogen-containing water generation system DK Electrolytic cell CL Control part R Hydrogen-containing water E Longitudinal direction

Claims (5)

a cylindrical anode portion having a plurality of openings on the side;
a cylindrical cathode portion having a plurality of openings on the side and spaced apart from each other on the radially outer side or the radially inner side of the anode portion;
a cylindrical tank body in which the anode part and the cathode part are provided;
a rod-shaped anode power supply member that extends along the longitudinal direction of the anode section and is attached to a side of the anode section;
a rod-shaped cathode power supply member that extends along the longitudinal direction of the cathode section and is attached to a side of the cathode section;
The first hole has a first hole through which the lower end of the anode power supply member passes and a second hole through which the cathode power supply member passes, and the first hole closes the lower end of the tank body. side base,
a hydrogen-containing water generating electrolyzer comprising;
Furthermore, a first hole through which the lower end of the anode power supply member passes, and a lower end of the cathode power supply member at a position different from the first lower base based on the position of the first hole. a second lower base having a second hole through which the second hole passes through, and closing the lower end of the tank main body ;
a control unit that notifies to replace the first lower base of the hydrogen-containing water producing electrolytic cell with the second lower base at a predetermined time;
A hydrogen-containing water generation system. Furthermore, a first hole through which the lower end of the anode power supply member passes, and a position different from the first lower base and the second lower base with respect to the position of the first hole are provided. a third lower base having a second hole through which the lower end of the cathode power supply member passes, and closing the lower end of the tank body;
Equipped with
After the first lower base of the hydrogen-containing water producing electrolytic cell is replaced with the second lower base, the control unit further controls the first lower base of the hydrogen-containing water producing electrolytic cell at the predetermined time. Notifying to replace the second lower base with the third lower base;
The hydrogen-containing water generation system according to claim 1. A line segment from the second hole of the first lower base to the central axis of the cathode part, and a line segment from the second hole of the second lower base to the central axis of the cathode part are The angle formed is between the line segment from the second hole of the second lower base to the central axis of the cathode part and the line segment from the second hole of the third lower base to the central axis of the cathode part. It is the same as the angle made by the line segment,
The hydrogen-containing water generation system according to claim 2. a cylindrical anode portion having a plurality of openings on the side;
a cylindrical cathode portion having a plurality of openings on the side and spaced apart from each other on the radially outer side or the radially inner side of the anode portion;
a cylindrical tank body in which the anode part and the cathode part are provided;
a rod-shaped anode power supply member that extends along the longitudinal direction of the anode section and is attached to a side of the anode section;
a rod-shaped cathode power supply member that extends along the longitudinal direction of the cathode section and is attached to a side of the cathode section;
A hydrogen-containing water generation method using a hydrogen-containing water generation system comprising a hydrogen-containing water generation electrolytic cell comprising:
The first hole has a first hole through which the lower end of the anode power supply member passes and a second hole through which the cathode power supply member passes, and the first hole closes the lower end of the tank body. a side base, a first hole through which the lower end of the anode power supply member passes, and a bottom of the cathode power supply member at a position different from the first lower base with respect to the position of the first hole. a lower base preparation step of preparing a second lower base having a second hole passing through the side end and closing the lower end of the tank main body;
a lower base number setting step of setting a total number of the first lower base and the second lower base prepared in the lower base preparation step;
a lower base replacement interval setting step of setting a time interval until the first lower base is replaced with the second lower base;
At the time interval, the first lower base is moved to the second lower base a predetermined number of times based on the total number of the first lower base and the second lower base set in the lower base number setting step. a lower base replacement step for replacing the base;
A method for producing hydrogen-containing water, including: comprising an electrode life prediction step of predicting the life of the anode part of the hydrogen-containing water generating electrolyzer;
The method for producing hydrogen-containing water according to claim 4.

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